Gas-grate.



Patented Oct. 9, |900. G. E. SHARPE.

I GAS GBAATL (Application led Oct.' 13, 1898.\

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Patented Oct. 9, |900. G. E. SHARPE.

G A S G R A T E..

(Application led Oct. 13, 1898.1

2 Sheets-Sheet 2.

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Unirse TATES PATENT OFFICE.

GEORGE E. SHARPE, OF STEUBENVILLE, OHIO.

GAS-e RATE.

SPECIFICATION forming part of Letters Patent No. 659,553, dated October 9, 1900. v

Application filed October' 18, 1898. serial No. 693,410. (No model.)

To @ZZ whom, t r11/cry concern:

Be it known that I, GEORGE E. SHARPE, a citizen of the United States, residing at Steubenville, in the county of Jefferson and State of Ohio, have invented certain new and useful Improvementsin Gras-Grabes, of which the following is a specification.

This invention relates to improvements in gas-grates; and one of the objects of the same is to simplify the construction and to reduce the number of parts so that they may be quickly assembled. As a consequence the labor incident thereto will be reduced and the cost lessened.

Another object of the invention is to cause the gas and air to mix more perfectly ybefore reaching the points of combustion and to prevent the two from banking separately in the chamber.

With these and other objects and advantages in view the invention consists of certain novel and useful combinations and arrangements of parts, which are clearly described in the following specication and particularly pointed out in the claims forming a part thereof.

In the drawing annexed hereto and forming a part of the specication, Figure lis a front elevation of my improved gas-grate, certain portions being broken away to more clearly show some of the features of the invention. Fig. 2 is a vertical sectional view of the same on the line 2 2 of Fig. l. Fig. 3 is a detail view in elevation of the back plate. Fig. 4 is a detail view of the gas-cock and that portion of the face-plate to which it is attached. Fig. 5 is a front elevation similar to Fig. l, but showing a modied form of construction. Fig. 6 is a sectional view of the same on the line 6' 6 of Figj. Fig. 7 is a detail view of the gas-cock, and Fig. 8 is a detail View of a modified form of tighteningplate. Fig. 9 is a detail sectional view of the mixer on line 9 9 of Fig. S.

Like letters of reference denote like parts throughout the several figures of the drawings. Y

A represents the front frame of the grate,

which may be of any preferred form or design.`

B represents the face-plate,which is formed, preferably, of a single sheet or piece of metal. It may be constructed from sheet metal, castiron, or any other suitable material. It is formed with the top and sides b and iianges b', by which it is secured to the frame A. This face-plate is provided with suitable openings or fines b2 near the top, through which may escape the products of combustion. At a suitable distance up from the bottom of the grate this face-plate B is provided with a series of perforations b3, arranged in any suitable manner and fora purpose which will become apparent later. These perforations may extend across the face-plate in parallel lines or rows. To the rear of the said face-plate and arranged to cover the area thereof, which is perforated, is secured a back plate C, which may be formed with the cross-channels c and connectingchannels c', as shown, forming gas-compartments. f The cross-chan nels c occur in alinement With the rows of perforatious, and through said channels the commingled gas and air are distributed to the said perforations or tlameorifices through the medium of a mixer D, which may be secured to the front of the face-plate. This mixer communicates with the channels in the back plate, forming the gas-chamber, as it were, through an opening d in the face-plate occurring opposite the lowermost part of the central connecting-channel c. This mixer is approximately semicylindrical or of troughlike formation, with a aring mouth d', and is formed with the flanges d2, by which it is secured against the face-plate and over the opening d, thereby forming a sort of pipe in which the gas and air commingle before entrance into the gas-compartments.

In the use of the channeled back plate to form the gas-chamber I insure the commingling of the gas and air before the product is finally delivered or distributed to the point-s of combustion and also prevent the gas and air from banking therein separately. Be-

vsides the gas and air are directed to the points of combustion with the two bearing the same ratio or relationship as when they leave the mixer, due tothe fact that the size of the inlet to the channels in the gas-chamber is proportional to the capacity of the mixer.

Immediately below the mixer ,D is agascock E, of any usual or preferred interior construction, which connects with the source of gas-supplyand has its nipple e3 projecting IOS into the dared mouth of the mixer, where the gas is injected and mixes with air, which also enters at the same place. This gascock is formed with the ears e, projecting laterally from each side of the body thereof, and said ears are bifurcated, as at e, or they may be perforated for the reception 0f fastening-bolts e2, which pass through openings in the face-plate, to be described presently, and are there secured by nuts. The utility of this construction will become apparent later. In order that the ears e may abut squarely against the surface of the face-plate and also that the gas-cock may be located directly in vertical alinemeut with the mouth of the mixer, the said face-plate is cut away in a circular manner, as at F, so that the stem of the cock may rest therein and not prevent. the adjustment of the saine. The ears `.vill then be readily secured to the faceplate by tle fastening-bolts e2. In order to receive them, the said openi ng F is augmented by the lateral slots f, which register with the openimgs` e in the ears of the cock.

As shown in Figs. 5 and, G, a plate H may be bolted or otherwise secured over that portion of the front of the face-plate which is perforated. This plate is formed with the horizontal slots h, arranged in rows to correspond and register with the several rows of perforations or flame-orioes in the said face` plate. This slotted plate may be employed where it is desired to more tightly secure the back plate C to the face-plate and to prevent leakage of gas through the surface contacts and around the edges. By tightening the plates a close joint is formed which is substantiallyhermetic. Thisframe-plateclamps the face-plate against the contiguous face of the back plate and prevents the gas from escaping between the two, thus compelling it to follow the channel formed therein and supply the gas-compartments. Where this slotted plate is used, the mixer D is formed integral therewith, but retains its Aessential features of construction, as heretofore outlined. This form of construction employing the slotted plate would not be used Where the channeled back plate is pressed from sheet metal, as it may be, for in such event the same objectthat is, to prevent the leakage of gas-would be attained by riveting the same to the body of the face-plate around the edges and between the channels. Then again the same result may be accomplished by the use of a skeleton plate or frame such as that shown in Fig. Sof the drawings,which conforms exactly with the contour of the secnring-iiangc of the plate forming the gaschamber. The bolts are passed through this frame-plate I, the face-plate, and through the backplate on the rear of the said face-plate, and the three thicknesses drawn tightly together.

Where sheet-iron is'employed in the construction of the face-plate, it may become desirable to prevent rusting and to increase the durability thereof, as well as to enhance the general appearance, `in which instance I may employ a sheet ot asbestos paper G, as shown iu the sectional views of the drawings, securing the same to the front surface of the face-plate, or it may cover both surfaces and the Haine-orifices in the said face-plate run therethrough. I also coat the entire visible front of the face-plate with asbestos K in the ber state, the object of which is well known.

This completes the construction of my invention, and its operation will be readily understood from the foregoing description without further explanation.

I do not desire to limit myself to the precise details of construction herein shown and described nor to the exact arrangement of parts, but reserve to myself the iight and privilege to alter the same within the bounds of mechanical skill without departing from the spirit of my invention.

Having thus fully described myinvention, what Iclaixn as new, and desire to secure by Letters Patent of the United States, is

l. The combination with a one-piece faceplate formed from a single sheet of metal, dame-orifices punched therein, and a dished plate covering said name-oritices and forming a chamber on one side of the face-plate, of a plate on the opposite side of the face-plate, having slots therein which register with the flame-orifices, means for clamping the slotted plate and the dished plate tightly against the face-plate to form a hermetic chamber, and suitable connections between said chamber and a source of gas-supply.

2. The combination with a face-plate made of sheet metal having flame-orifices punched therein, and arranged in rows, of a back plate secured to said face-plate to form a chamber and having a corresponding number of channels therein arranged each to register with a row of flame-orifices, intersecting channels connecting the aforesaid channels, a plate having slots therein to register with the flame-orifices, means for clamping the channeled and slotted plates against the intermediate face-plate, and suitable connections between said chamber and a source of gas-supply.

3. The combination with a one-piece faceplate formed from sheet metal and having rows of flame-orifices punched therein, of a back plate secured on said face-plate to form a chamber and having channels therein corresponding in number to the rows of flameoriiices with which they register, intersecting channels in the plate connecting the aforesaid channels, and suitable connections between said chamber and a source of gassupply.

4. A gas-heater burner, having a back plate, and a face-plate fitted gas-tight to said Vback plate and provided with a series of rows of tiame-oriices, a series of independent gascompartments being formed between the back plate and face-plate equal in number to the number of rows of flame-orifices, and a gassupply common to all such compartments, substantially as described.

5. A gas-heater burner, having a back plate, provided with a series of compartments separated by horizontal ribs, a faceplate applied gas-tight to said back plate and against its ribs, and having a series of rows of liame-orices, and a gas-channel communicating independently with the said compartments, substantially as described.

6. Acfas-heater burner, having` aface-plate provided with a series of rows of dame-orifices and also with applied refractory incandescent material or substance, and a back plate to which the face-plate is fitted gastight, supplied with as many independent gas-compartments as there are rows of flameorifices and with a feed-channel common to all such compartments, substantially as described.

7. A gas-heater burner, comprisingaback plate provided with an inlet-channel and end branches thereof, a series of compartmentsy in said back plate, and a face-plate applied to the back plate and having llame-orifices, substantially as described.

8. A gas-heater burner, comprising a faceplate containing a series of flame-orifices, a

back plate upon which the face-plate is sup-v GEORGE E. SHARPE.

Witnesses:

S. C. HOPKINS, EDw. C. DUvALL, J r. 

